Llangorse, Powys - The Fortress in the Lake Time Team : Season 1 Episode 4

The Fortress in the Lake. In the Dark Ages, a powerful king decided to show how powerful he was and built a man made island in the middle of a lake and stuck a palace on top of it. Who was the king and who were the builders and what happened to them all? The time team visits the site of this Dark Age man-made island, known as a Crannog, in Llangorse Lake near Brecon in Wales.